Perfect Dark. Years later it's still addicting.
Reviewing this game as if it were just released I believe would be a mistake. I see it as a throwback to oldschool FPS games where ammo was plentiful, cover mechanics were unheard of, and enemies were polygonal monstrosities. Perfect Dark for XBLA is a bridge between generations of gaming and that's where I think the developers hit the nail on the head. Players who are looking for a simple port with the old graphics will be disappointed as will those looking for a completely reformed game. As for those looking for the best of both worlds, you're in luck.
Yeah the controls and graphics aren't like MW2 but if you're looking for a little nostalgia, rose-colored style, you got yourself a winner here.